zero compression cylinder 7
 

Did a compression check after getting codes for 4 6 7 misfires. 1 2 3 5 and 8 are all 160 170 psi while 6 has 60 4 has 90 and 7 came back with ZERO! What happened and what do I do now?

Redo the test. Confirm your numbers.
Then evaluate your symptoms.....blue smoke, burning coolant, white smoke. How did the plugs look.?steam cleaned or like the others.

Haven't been burning a bit of coolant but it sucks oil pretty good. I have had a p0306 forever so wanting to give it a proper tune up i replaced coil packs along with new magnacor wires and copper plugs. Plugs quickly fouled with oil and noticed oil in throttle body and almost trying to seep it's way into the MAF while I had plenum removed to get to coil pack. I will double up on my compression test tonight along with adding oil to see if maybe the rings are worn. I don't have much faith in my engine I have had nothing but trouble since I've owned this thing. 2000 d2 around 98k. Any other suggestions? It has always seemed to struggle for power

I really wanna say it's rings, because a valve wouldnt create oil burn situation but i have been wrong before..... retest with oil and see what happens.

With zero compression, spark plug spacers won't work.
----> http://forum.ih8mud.com/attachments/...92-jpg.792516/

But will ensure plug fires; and could tell other diagnosing symptoms for cheap.
Connect a vacuum gauge at the intake manifold and observe a tell-tale chart !

Redo compression test, dry and wet and follow with a leak down test.

zerocompression my moneys on valvetrain

ZERO compression, valve issue but if the plug is getting oil wet, may be a down below problem. Perhaps broken piston rings. My compression consist of cranking and building combustion chamber pressure 3 times and average. That give a more accurate reading. As above stated vacunm gauge is very helpful diagnosing issues like these.
I am not a mechanic, just a guy that like to fix broken things so I bought a Land Rover.....

Oil in the intake sounds like your PCV valve is stuck wide open. No compression at all? Not even 1 PSI? That's horrible! There are many things that can cause that. Rings broken... big time! Valve stuck open, hole in the piston, etc. etc.

Put some Seafoam in it! I'm totally joking of course.

Thanks guys! Bring life to this thread! Happy to sre all reaponses and participation Lol. Just got off work. Gonna do 1x dry and 1x wet all cylinders. First time even going to 2000 rpms not even 1 psi! I do have a donor motor that came from a vehicle that had a cigarette fire and i bought whole vehicle from a lady near my small town ( near springfield, il ) so really thinking about avoiding all tinkering g and start removing things to pull mine out and make way for the new one. New heavy duty motor mounts and timing chain and putting all my updated pulleys and etc. On front end.